New Children's Halloween Costume. SOLD OUT!!! Size: One Size fits Most. Lists One Size fits most but then on back lists M (7/8) with measurements: A: 26.5" B: 24.5" C: 27.5" D: 21" - 23" E: 50" - 53.5" Measurements seem to fit their Description of Male Child M (7/8). Your little one can become the Red Ninja himself, the Elemental Master of Fire, in this Kai Legacy Basic Costume. The costume features a foam overlay with gold dragon detailing, half mask and black LEGO hands. *Shirt & pants are NOT included. One size fits most children. NO RETURNS!!!